Specifications

The following tables document the nominal recommended operation conditions.

Refer to Interface Specifications for more details about onboard and mating connectors.

Power Supply

ItemConditionsMin.Typ.MaxUnit

Input Voltage Range

-

9

28

36

V

Typical Power Consumption

Over full Input Voltage Range without GNSS Antennas

-

2.7

6

W

Inrush Current Consumption




700

mA

Under-Voltage Lockout ThresholdRising
8.5
V
Falling
8
V

Grounding Scheme

On the MAIN connector, the signal ground (SGND_MAIN) and the power ground (VIN-) are each individually galvanically isolated from the chassis. The same applies to the signal ground of the AUX connector (SGND_AUX).

GroundConnectorIsolation
VIN-MAINIndividually isolated from chassis
SGND_MAINMAINIndividually isolated from chassis
SGND_AUXAUXIndividually isolated from chassis

Each ground is nevertheless tied to the chassis through an internal bypass capacitor. This provides a high-frequency return path for EMC purposes, while maintaining the isolation at DC and low frequency, where ground loops occur.

This is a functional isolation only. Its sole purpose is to break ground loops that could affect signals. It is not a safety isolation and does not provide any protection against electric shock.

I/O Interfaces

ItemConditionsMin.Typ.MaxUnit

Sync In (all)

Input Range

-

-15


+15

V

Low Level Threshold

-

0.6

1.2


V

High Level Threshold

-


1.5

2.4

V

Input Resistance

-

3

5

7

kΩ

Sync Out A (RS-232)

Low Level Output Voltage

RL=3kΩ

-5

-5.5


V

High Level Output Voltage

RL=3kΩ

5

5.5


V

Output Short Circuit Current

-


±30

±60

mA

Sync Out B (LVTTL)
Low Level Output VoltageIL=100μA3.2

V
IL=16mA2.4

High Level Output VoltageIL=100μA

0.1V
IL=16mA

0.4

RS-232 Interfaces

ItemConditionsMin.Typ.MaxUnit

Receivers

Input Range

-

-15


+15

V

Low Level Threshold

-

0.6

1.2


V

High Level Threshold

-


1.5

2

V

Input Resistance

-

3

5

7

kΩ

Transmitters

Low Level Output Voltage

RL=3kΩ

-5

-5.5


V

High Level Output Voltage

RL=3kΩ

5

5.5


V

Output Short Circuit Current

-


±30

±60

mA

RS-422 Interfaces

ItemConditionsMin.Typ.MaxUnit

Receivers

Input Differential Threshold

-7V<VCM<+12V

-200

-125

-50

mV

Input Hysteresis

-


25


mV

Input Resistance

-

100

120

155

Ω

Transmitters

Differential Output Voltage


RL=100Ω

2


3.3

V

Common Mode Output Voltage

RL=100Ω



3

V

CAN Interface

ItemConditionsMin.Typ.MaxUnit
Receiver
Bus Common Mode Voltage -

±25V
Bus Input Differential Threshold VoltagePositive-Going
775900mV

Negative-Going

500625
mV

Bus Input Differential Hysteresis Voltage



150
mV
Transmitter

Recessive Bus Output Voltage

No Load

1.45

1.95

2.45

V

CAN H Dominant Bus Output Voltage


2.15

2.9

3.3

V

CAN L Dominant Bus Output Voltage


0.5

0.9

1.65

V

Ethernet

ItemConditionsMin.Typ.MaxUnit

100BASE-TX Transmitter

Peak Differential Output Voltage

100Ω termination across differential output

0.95


1.05

V

Output Voltage Imbalance

100Ω termination across differential output



2

%

10BASE-T Transmitter

Peak Differential Output Voltage

100Ω termination across differential output

2.2


2.8

V

10BASE-T Receiver

Squelch Threshold

5 MHz square wave


400


mV


GNSS Antenna Port Electrical Specifications


ParametersConditionsMin.Typ.MaxUnit

Output Current

-



150

mA

Output Voltage

-


5.0


V

Short-circuit current limit

-



168

mA

GNSS Antenna Requirements

ParametersRequirements
TypeActive, featuring embedded LNA ( Low Noise Amplifier )
Gain Range17 - 50 dB
Maximum Noise Figure4 dB

Electrical Absolute Maximum Rating

Important note

Stresses above those listed under the Absolute Maximum Ratings may cause permanent damage to the device. This is a stress rating only; functional operation of the device at these or any other conditions above those indicated in the operational section of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.

ItemRatingUnit

RS-232/RS-422/SYNC-IN/SYNC_OUT(RS232) to Signal Ground

±18

V

Ethernet to Signal Ground–0.5V to +5.0V
SYNC_OUT(TTL) to Signal Ground–0.5 to +3.8V
CAN to Signal Ground±60V
VIN+ to VIN-±40V
VIN- to Mechanical Ground±40V
Signal Ground to Mechanical Ground±40V

ESD Circuit protection for all pins

30

kV

ESD Circuit protection for GNSS Antenna ports

15

kV

Maximum RF Power Input for GNSS Antenna ports

10

dBm